• US 4,741,224 A
  • Filed: 11/19/1986
  • Issued: 05/03/1988
  • Est. Priority Date: 08/08/1986
  • Status: Expired due to Term
First Claim
Patent Images

1. In a flywheel composed of an annular metal plate and a pulley made of a synthetic resin and superposed coaxially as a unitary member with the annular metal plate, the improvement wherein the annular metal plate defines a plurality of outwardly-extending notches at an equal angular interval along an inner peripheral edge portion and a corresponding number of interlocking holes along the inner peripheral edge portion between the respective notches;

  • the pulley is provided at the same equal angular interval as the angular interval of the notches with a plurality of holding lugs extending outwardly beyond the inner peripheral edge of the annular metal plate and holding the inner peripheral edge portion between the lugs and the pulley; and

    the pulley is provided, at at least one of locations opposing to the interlocking lugs, with an elastic interlocking member maintained in engagement with one of the holes, so that upon assembly of the flywheel, the elastic interlocking member is brought into engagement with said one of the interlocking holes by coaxially superposing the metal plate and pulley with the holding lugs and elastic interlocking member registered with the notches and then turning the metal plate and pulley relative to each other.

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